fig1

Figure 1. Baseline situation. (A, C) Clinical examination revealed the presence of a recession of the interdental soft tissue situated at the distal line angle of tooth #12 and at the mesial angle of the canine. (B) The radiographic examination showed a bony defect between #12 and #13 with horizontal supracrestal bone loss and a deep infrabony defect at the mesial side of canine.